Sectional sash-weight.



STATES PATENT OFFICE.

ICHO AS A. rETRY, or PHILADELPHIA, PENNSYLVANIA.

SECTIONAL SASH-WEIGHT.

To all whom it may concern Be it known that I, NiononAs A. Pn'rar, a citlzen of the United States, residmg in Philadelphia, Pennsylvania, have invented certain Improvements in Sectional Sashments in the sectional sash weight for which I obtained Letters Patent No. 80%,037, on the seventh day of November, 1905, one object of my present invention being to so construct the interlocking portions of adjoining members of the weight as to prevent lateral displacement of either member in spect to the other and another object being to so construct said interlocking portions of the adjoining members of the weight that each of said members will hang plumb. These objects I attain in the manner hereinafter set forth, reference being had to the,

accompanying drawing, in which- Figure 1 is a side view of one member of a sectional sash weight constructed in accordance with my present invention, part of the next member being shown in engagement therewith; Fig. 2 is a view partly in elevation and partly in section looking at the weight member in the direction of the arrow 02, Fig. 1, and showing, in section, the interlocking portion of the adjoining member, the sections being on the lines a a, Fig. 1, and Fig. 3 is a view looking at the weight member in the direction of the arrow 3/, Fig. l, and showing part of the engaging weight in section on the line aa, Fig. 1.

In the drawing, 1 represents the 'body of the weight member which has, at one end, a hook 2- with hook-shaped recess 3 below the same, and at the other end a hook 2 with hook-shaped recess 3 above it, this latter recess having an inclined or beveled top 4 or being otherwise so constructed as to permit the ready application of the hook 2 of one member of the weight to the hook Q of another member in the manner set forth in my former patent. In the present instance, however, the opposite side portions of the hook 2 are otfset in respect to one another so as to provide, on the bottom of the hook, a lateral shoulder 5, and the bottom of the hook-shaped recess 3 is likewise oflset so as to provide a lateral shoulder 6, both the upper and lower faces of the hook 2 being oli'set in like manner, so as to provide on the upper face of the hook, a lateral Specification of Letters Patent.

Application filed December 18, 1909.

Patented Oct. 28, 1913. Serial No. 533,969.

shoulder 7 and on the lower face of the hook a lateral shoulder 9, all of the shoulders being located centrally or thereabeut, whereby the shoulder 7 will, by cont-act with the shoulder 5 of the hook 2 of the interlocking member of the weight, and the shoulder 9 will, by contact with the shoulder 6 in the bottom of the hook-shaped opening 3 of saidinterlocking member, effectually prevent any considerable bodily lateral movement in respect to one another, of the interlocking members of the weight, and consequently, there can be no material lateral displacement of the members in the weight-receiving box of the window frame. In order, however, that each member of the weight may hang plumb, withoutregard to the member above or below the same, I flare or bevel the faces of the hooks of adjoining members of the weight from the center toward each side, so as to limit their actual contact to that portion of each hook intermediate of the opposite sides, of the same. This flare or bevel may be limited to the under side of the hook 2 or to the upper side of the hook 2", although I prefer, and in the drawing 1 have shown, the Hare or bevel upon each of these parts, the flare on one part being the reverse of that upon the other, and. I have also shown corresponding reverse flares upon the under side of the hook 2 and the bottom of the recess 8, although the flaring of these parts is not essential, as there is always some little play between these portions of adjoining members of the weight. It is also preferable to laterally separate the shoulders 5 and (3 or the shoulders 7 and 9, or both, in order to provide some leeway in fitting the successive members of the weight together, since, if both shoulders were in line with each other at the center of the weight, the rough surfaces of the shoulders due to the casting might prevent the proper fitting together of the hooks of the adjoining members of the In the present instance I have shown this lateral separation as applied to the shoulders 7 and 9 of the hook 2. The books 2 and 2 are likewise so formed, as shown in Fig. 1, that the contact points of the hooks is limited to the portion intermediate of the front and back faces of the weight, whereby the weight is caused to hang plumb in a fore-and-aft direction as well as laterally.

The hook 2 of the topmost member of a was only weight is perforated as at 10, for the reception of the rope, chain or other suspending device to which the weight is hung. It is important that the top of this opening should be substantially in line with the center of the weight, in order that the latter may hang straight when suspended, but if the opening was vertical it would cut away the central contact point on the under side of the hook and would interfere with the proper support of said hook upon the central point of the hook 2 of another member of the weight. If the opening 10 formed in the hook 2 of the topmost member of a weight this would be of no consequence, but it is customary to form the opening 10 in the hook 2 of every member of a weight, so'that any one of them can be used as a top member. For this reason I incline the opening 10 so that its lower end is near the base or inner end of the hook 2 and the central contact point of that portion of the underside of the hook which rests upon the hook 2 is not impaired.

I have illustrated my invention in connection with a sash weight having a rectangular cross sectional form, but such cross sectional form is not material to my invention.

The improvements upon the patented weight which I have devised, while attended with material advantages do not prevent the casting of the weight member without cores, the opening 10 being formed by a suitable plunger so mounted upon the mold that it can be advanced and retracted.

I claim 1. A sectional sash weight member having hooks whereby successive members can be pivoted together so as to swing in one plane, said hooks having lateral central points of pivotal contact, and being flared outwardly in opposite directions from said points of contact whereby the members are also free to swing in a plane at right angles to that first referred to.

2. A sectional sash weight member having hooks whereby successive members can be pivoted together so as to swing in one plane, said hooks having their pivotal contact points about midway between the front and back of each member and also about midway between the opposite sides of each member,but

v portions being flaring laterally in opposite directions from such points of contact whereby the weight members are free to swing in both fore-andaft and transverse planes.

3. A sectional sash-weight member having hooks whereby successive members can be pivoted together so as to swing in one plane, said hooks having central shoulders whereby lateral displacement of the members is prevented, and having adjacent to said shoulders points of contact and being flared outwardly from said points of pivotal contact whereby the members are also free to swing in a plane at right angles to that first referred to.

4:. A sectional sash weight member having hooks whereby successive members can be pivoted together so as to swing in one plane, said hooks having shoulders disposed about midway between opposite sides of the member and serving to prevent lateral displacement of the members, said books also having points of pivotal contact about midway between the front and back and between the opposite sides of the member, but being otherwise free from contact with one another, whereby the members are free to swing both in fore-and-aft and transverse planes. 7

5. A sectional sash weight member having a suspension hook for engaging the hook of another member, said suspension hook having formed therein a rearwardly inclined opening for the reception of a suspending device, the contact portion of the two hooks being in advance of the inner end of said opening.

6. A sectional sash weight member having a hook whose underside presents oifset portions forming a lateral shoulder, said ofli'set flared or beveled from said shoulder toward each side of the hook, and said hook having a rearwardly inclined opening for receiving the weight suspending device.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

NICHOLAS A. PETRY.

\Vitnesses:

KATE A. BEADLE, HAMILTON D. TURNER.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. G. 

